
unit-1 8051 MCU
Authored by Devika Thiyagarajan
Education
3rd Grade
Used 10+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The internal RAM memory of the 8051 is:
32 bytes
64 bytes
128 bytes
256 bytes
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The 8051 has ________ 16-bit counter/timers.
1
2
3
4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
MOV A, @ R1 will:
copy R1 to the accumulator
copy the accumulator to R1
copy the contents of memory whose address is in R1 to the accumulator
copy the accumulator to the contents of memory whose address is in R1
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An alternate function of port pin P3.4 in the 8051 is:
Timer 0
Timer 1
interrupt 0
interrupt 1
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
8051 has four ___ ports which are of 8-bit each
Input-Output
Input
output
None of these
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
The 8051 can handle ________ interrupt sources.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The total external data memory that can be interfaced to the 8051 is:
32K
64K
128K
256K
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